Improved machine foe eiveting hinges



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HENRY D. BLAKE, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. AND

F.'CORBIN, OF SAME PLACE.

Letters Patent No. 75,663, dated March 17, 1868.

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TO ALL WHOM IT 'MAY CONCERN Be it known that I, HENRY D. BLAKE, of NewvBritain, in the State of Connecticut, have invented, made,

andap'plie'd. to u'sea certain new and useful Improvement inRiveting-Machines; and I do hereby declare the following. tobe' a full,clear, and exact description of the said invention, reference being badto the annexed drawing, making part of this specification, wherein-Figure lis a plan of my said machine. Figure 2 is a vertical section atthe line :0 m. Figure? is an end view, and Figure 4 a side view of theriveting-die; and v v I Figure 5 is a side vicw'of a portion of a hinge,showing the rivet-head at one end of the wire or pin.

Similar marks of reference denote thesame parts. v =Heretofore it hasbeen usual to rivet up the pins'of hinges by a hammer, the concussion ofwhich is likely to bend the pin, causing the same to bind and the hingeto work stiti'. I I My invention-is especially adapted to the rivetingof hinges, but maybe applied to any other character of rivet in'whichthe-heads can be formed at the ,two ends of the wire or rodsimultaneously; and said invention consists in spreading the metal toform the rivet-heads by the revolution of a die or spreader acting underpressure, to gradually ,cxjtendthe metal and form the head with arounded and smooth surface.

, This iimprovement in rivetihg may be used for the pins of butt orstrap-hinges. In the drawing, a is a bed, upon which are boxes carryingthe main driving-shaft b, on which are the pulkeys 0 d, and gear-wheele. fis a shaft supported in a movable head, g, and rotated by across-belt from the pulley e. Thephead g is supported by the'bed a, andis provided with a screw-clamp below the slotted bed,'to

allow the head to beadjusted nearer to or further from themandrel-head]; to accommodate the length of rivet to be operated upon,and the'head k may also be similarly adjusted. The head It carries amandrel or shaft, 1', and'nt its end, and the end of the shaftf facingit, aredies 7c lc, that form the rivet-heads, and are more particularlydescribed hereafter. The shaft 2' is provided with a pulley, Z, and beltto the pulley d,,and m isa spring and sliding forlf taking a'neck in theshaft 2', and keeping it against the slide 11., that is fitted to moveendwise in the'boxes 2 2, onh, by a lever, a, on a fulcrum 3, acted uponby a cam, 12, on the shaft 9, that is driven by the wheel r to the geare. I pp It will now be understood that the shaftsf andi are revolved inoppositedirections, that they carry at their ends riveting-dies, thatone of the shafts is moved ondwise as it revolves, and that the partsare to be so adjusted thatthe distance between the dies-k k, at thetermination of each movement, corresponds to the length of the rivetedwire. 1 l l I The riveting is effected by the rotation, in oppositedirections, of the dies that act by pressure at the ends ofthe'wire,'rod, or rivet-blank, to spread? extend, and smooth the metalwithout'bending the wire or rod.

The red lines in 'fig. 3 represent the size of the wire, and of theheadwithin the die The position oi the cam 12 is adjustable byset-screws, so that the movement of the dies endwise can be accuratelydetermined. I

What 'I claim, and-desire to secure by Letters Patent, isp Ariveting-tool composed of a rod of metal having V-shaped groovescrossing and radiating from its longitudinal axis across a face or endsurface which is otherwise perpendicular to the axis of said rod,substantially as described. 1

I I also claim the riveting-tool set forth in the foregoing claim, incombination with mechanism for operating the same, arrangedsubstantially as described.

In witness whereof, I have hereunto set my signature, this.3d day ofOctober, A. D. 18 67.

HENRY D. BLAKE.

Witnesses Ones. Pncx, Enwr L. Pnroa.

